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authors Elsasa, P.A. van and Vergeesta, J.S.M.
year 1998
title Displacement feature modelling for conceptual design
source Computer-Aided Design, Vol. 30 (1) (1998) pp. 19-27
summary Although the support of surface features, where a surface feature represents a local geometric detail imposed on a surface, is well-defined on prismatic objects, this is notthe case for sculptured surface models. Current methods often lead to data-explosion, high polynomial results, or procedural solutions. In this paper a method isdescribed that allows explicit modelling of protrusions and depressions in free-form B-spline surfaces. As this functionality is intended to be used by industrial designersduring conceptual design, distinct requirements are formulated to allow its use in this early stage of design. A method is described that calculates a blending geometryapproximating G1 cross-boundary smoothness effectively. Using these requirements and approximations, protrusions and depressions can be modelled with real-timeresponse, and with unprecedented flexibility.
keywords Surface Features, Conceptual Design, Curvature Continuity Approximating, B-Spline Patches
series journal paper
references Content-type: text/plain
last changed 2003/05/15 19:33
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